What is the main function of sunglasses?
These are glasses that protect your eyes from the harmful UV rays. UV rays are rays that are located just past the violet portion of the visible light spectrum. The rays are usually broken down into three main types: UVA, UVB, and UVB.
Do children need sunglasses?
Yes, children need to wear sunglasses. In fact children need to wear the glasses more than adults. This is because they are usually at more risk of being affected by the rays more than adults.
You should remember that UV damage is cumulative over a person’s lifetime; therefore, if you want to protect your children from the damage, you should ensure that they start wearing the glasses as early as possible.
What are polarized sunglasses?
These are glasses that reduce glare and improve visual comfort. The glasses reduce glare from horizontal surfaces such as water, pavements, snow, roads, sand and reflective surfaces such as car exteriors.
A polarized film is usually built into the lens and acts as a venetian blind and blocks out light travelling in certain directions that would have resulted in glare.
Are expensive sunglasses better than cheaper ones?
Although expensive sunglasses are of high quality, they are not better than their cheaper counterparts.
When buying, you don’t need to go for the expensive ones; you should check the type of lenses that the glasses have and ensure that the lenses provide adequate protection from the harmful UV light. You should also ensure that the lenses are not distorted.
What are the different kinds of lenses available in the market?
Different sunglasses come with different lenses meant for different functions. For example, there are amber lenses that are usually found in blue-blockers. There are also polarized lenses that are found in sports sunglasses that are used in playing water and snow sports.
There are also mirror-coated lenses that aid in reducing the amount of light entering the eyes and as a result you are very comfortable even if you in areas with a lot of light.
Which is the best lens color?
The lens color is a personal choice and it doesn’t affect the ability of the glasses to function. Gray and brown colors are popular because they distort color perception the least.
Other people such as athletes usually prefer other tints for their contrast-enhancing properties. For example, yellow lenses are popular with skiers and shooters because they work best at low light. The lenses also increase contrast in order to have a sharper image.
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